body {
  background: url("../images/money.jpg") no-repeat;
  background-size: cover;
}
#box {
  width: 30vw;
  height: auto;
  text-align: center;
  margin: 0 auto;
  margin-top: calc((100vh - 50vh) / 2);
  border: 1px solid #e6e6e6;
  background-color: #fff;
  border-radius: 30px;
  
}
#box input {
  width: 60%;
  height: 5vh;
  padding: 2px 20px;
  margin-top: 10px;
  color: #000;
  font-size: 14px;
  outline: none;
  list-style: none;
  border: none;
  background: none;
  border-radius: 10px;
  border-bottom: 2px solid #aec8ca;
}
#box a {
  display: block;
  width: 50%;
  height: 6vh;
  margin: 30px auto;
  line-height: 6vh;
  background-color: #808eaf;
  border-radius: 15px;
  color: #fff;
  border: 1px solid #e6e6e6;
}